Untitled Document
|
Project Mission |
|
To conduct quantum information related
research to: |
 |
Provide solutions for advanced quantum
information science and technology to enhance US industrial
competitiveness. |
|
Develop and exploit new
calibration and metrology techniques to achieve standardization in the
area of quantum information and communication.
|
|
Provide an infrastructure for quantum communication
metrology, testing, calibration, and technology development.
|
 |
|
About Us |
| |
Publications
|
| |
Links |
| |
Collaborations
|
| |
Team |
| |
Developments
|
| |
Opportunities
|
|
 |
|
|
|
|
Most Resent Publications |
Lijun Ma, S Nam, Hai Xu, B Baek, Tiejun Chang, O Slattery, A Mink and Xiao Tang,
"
1310 nm differential-phase-shift QKD system using superconducting single-photon detectors ".
New Journal of Physics, Vol. 11, April 2009.
Alan Mink, Joshua C Bienfang, Robert Carpenter, Lijun Ma, Barry Hershman,
Alessandro Restelli and Xiao Tang, "
Programmable instrumentation and gigahertz signaling for single-photon quantum communication systems ".
New Journal of Physics, Vol. 11, April 2009.
Lijun Ma, Alan Mink and Xiao Tang,
"High Speed Quantum Key Distribution over Optical Fiber Network System ",
Journal of Research of the National Institute of Standards and Technology, Vol. 114, Number 3, Page 149, May- June 2009.
A. Mink, S. Frankel, and R. Perlner,
" Quantum Key Distribution (QKD) and Commodity Security Protocols: Introduction and Integration ",
International Journal of network security and its applications, Vol. 1, No. 2, July 2009.
Lijun Ma, Oliver Slattery, Tiejun Chang and Xiao Tang,
"
Non-degenerated sequential time-bin entanglement generation using periodically poled KTP waveguide ",
Optics Express, Vol. 17 Issue 18, pp.15799-15807 (2009).
Lijun Ma, Oliver Slattery and Xiao Tang,
"
Experimental study of high sensitivity infrared spectrometer with waveguide-based up-conversion detector ",
Optics Express Vol. 17, Issue 16, pp. 14395–14404 (2009).
Xiao Tang, Lijun Ma, Oliver Slattery, “Single photon detection and spectral measurement in near infrared region using up-conversion technology”
invited talk, presented at LPHYS09, Barcelona, Spain, July 13-17, 2009.
Lijun Ma, Oliver Slattery, Tiejun Chang and Xiao Tang, “Sequential time-bin entanglement generation using periodically poled KTP waveguide”,
CLEO/ IQEC (Optical Society of America, Washington, DC, 2009), JWA85.
Xiao Tang, Lijun Ma, Oliver Slattery, “Single photon detection and spectral measurement in near infrared region using up-conversion technology”
invited talk, presented at LPHYS09, Barcelona, Spain, July 13-17, 2009.
Burm Baek, Lijun Ma, Alan Mink, Xiao Tang and Sae Woo Nam,
"
Detector performance in long-distance quantum key distribution using superconducting nanowire single-photon detectors ",
Proc. SPIE, Vol. 7320, 73200D (2009).
Oliver Slattery, Alan Mink, and Xiao Tang,
"
Low noise up-conversion single photon detector and its applications in quantum information systems ", Proc. of SPIE Vol. 7465, 74650W, 2009.
Oliver Slattery, Lijun Ma and Xiao Tang,
"
Optimization of photon pair generation in dual-element PPKTP waveguide ", Proc. of SPIE Vol. 7465, 74650K, 2009.
Oliver Slattery, Lijun Ma and Xiao Tang, “High-Speed Coincidence Photon Pair Generation by Dual-Element PPKTP Waveguide over GHz repetition rate”,
submitted to Frontier in Optics 2009 (the 93rd annual meeting of Optical Society of American, San Jose, October, 2009). WERB review approved.
All Publications.
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
Project Phases
|
|
Phase I Accomplishment (Architectural Design):
Completed the initial architectural design of the system, including
hardware and software components.
|
Architecture of NIST QuIN testbed |
|
|
Phase II Accomplishments (Component
Design and Implementation):
A four-channel 1G Ethernet WDM system, and the optical interfaces to telescopes
were completed. These classical channels are to be used for sending timing
and framing information. |
|
|
|
|
WDM for 125GHz classical system
|
Optical interface for quantum links
|
|
The high-speed electronics for controlling the full system was designed
and the circuit boards were fabricated. An FPGA on each board allows
for complex parallel logic that is reprogramable providing a path
for revisions and enhancements.
|
|
|
|
PCI interface high-speed electronics boards
for Alice (left) and Bob (right).
|
Completed the device drivers for the PCI boards which provide access
to the hardware. Completed the basic upper layer software for system
control and management of secrets (obtaining, maintaining, and using
quantum keys), and interactions with applications that need encryption.
|
|
|
Phase III Accomplishments (System
Integration and Performance Measurements):
We integrated the NIST custom high-speed electronics, which handles a
large potion of the BB84 QKD protocol, to the Quantum devices and optics
on the lower layers and to the communications software algorithms, Sifting
and Error Reconciliation (Cascade) on the higher layers. Bring this highly
experimental system to life required significant tuning and enhancements
of all the layers of our testbed. An early indication of our success is
the preliminary 1 Mb/s Sifted Key rate we were able to achieve from our
initial integrated Testbed trails. |
|
|
|
|
High Speed electronics communication using the
QKD protocol stack
|
Optical Network – Quantum
Channels and Classical channels
|
|
The QKD Protocol Stack |
|
|
Phase IV Accomplishments (Enhancements
& Fiber Development):
During 2005-2006 we have attained significant performance results with
the development of a polarization encoded fiber-based QKD system. Initial
performance for a B92 protocol implementation was measured in excess of
1 Mb/s Sifted Key rate, followed by a number enhancements performance
was doubled to 2 Mb/s Sifted Key rate and 1 Mb/s Privacy Amplified secure
key. After upgrading the system to conduct the BB84 protocol, performance
was measured in excess of 4 Mb/s Sifted Key rate with an error rate of
3.6% over 1km of fiber. The technical details are described in the publication
"Experimental
Study of High Speed Polarization-Coding Quantum Key Distribution with
Sifted-Key Rates Over Mbit/s," Optics Express, Vol. 14, No. 6, p.2062
(2006).
Furthermore, as part of its open testbed function super conducting single
photon detectors, developed in NIST’s EEEL were installed in place of
the original silicon detectors and measured performance showed these detectors
had very low jitter allowing high time resolution. |
Fiber-Based Quantum Key Distribution System |
| The figure above shows the configuration
of the system. It uses two telecom fibers. One is the quantum channel
for transmitting 850 nm photons with a mean photon number of 0.1. The
other is the classical channel transmitting bi-directionally at 1510 and
1590 nm. Four silicon-based single photon detectors are used in the system.
The NIST custom high-speed electronic printed circuit board handles the
quantum and classical channels and the sifting protocol. The NIST reconciliation
and privacy amplification protocols are currently implemented in software. |
|
|
|
|
Sifted Key Rate vs. Distance
|
Data Rate vs. Error Rate
|
|
| The system generates 4 Mbit/s of sifted
key over 1km of fiber, and 1 Mbit/s over 4km. From calculation it should
be able to generate sifted key at 0.1 Mbit/s over 8 km of fiber. |
The next generation of high-speed electronics will provide faster QKD
operation by using
higher frequencies and incorporat8ng reconciliation and privacy amplification
in hardware. |
|
|
|
|
As an example of an application for our high
speed QKD system we are constructing a video surveillance network
with three nodes (one Alice & two Bobs). Alice can alternatively
view QKD secured real-time video signals from either the cameras
at Bob1 or at Bob2, which are at two different locations.
|
The NIST secure QKD video surveillance application
encrypts, transmits and decrypts web quality video continuously
over the internet using a continuously generated real-time QKD
secure key.
|
|
| |
|
|
|
